The Number That Reframes Everything
Dermatology research consistently attributes the large majority of visible facial ageing to ultraviolet exposure rather than to the passage of time. Estimates vary by study and by population, but they cluster high enough that the conclusion is not sensitive to the exact figure. Most of what people call getting older is, in the skin, accumulated sun.
If you have ever seen the published photographs of a long-haul lorry driver whose left cheek faced a window for decades, you have seen the experiment run on one person. One side of that face is deeply lined and thickened. The other side is not. Same age, same genes, same diet, different exposure.
What UV Actually Does Down There
UVB is the shorter wavelength that burns you and damages DNA directly. UVA is longer, penetrates deeper into the dermis, passes through window glass, and is the main driver of collagen and elastin breakdown. UVA is why the driver in that photograph aged on one side without ever getting sunburnt at the wheel.
The damage is cumulative in a way that matters: skin does not reset between exposures. Ten minutes a day walking to a bus stop, five days a week, adds up to more lifetime UVA than the fortnight anybody remembers as their sun holiday.
What Good Use Looks Like
| Question | Short answer |
|---|---|
| Which SPF? | SPF 30 or higher, and it must say broad spectrum so it covers UVA. |
| How much? | Most people apply well under half of the tested amount. Roughly two finger lengths for the face and neck is the usual rule of thumb. |
| How often? | Every two hours in real sun exposure, and after swimming or heavy sweating. |
| On a grey day? | Cloud stops much less UVA than it appears to. If you are outside in daylight, it applies. |
| Behind a window? | Ordinary glass blocks most UVB and much less UVA. Desks beside windows and long drives count. |
Where A Vitamin Fits, And Where It Does Not
Vitamin A has the deepest research base of any nutrient in skin biology, and its topical relatives are prescribed for photoaged skin. That is worth knowing and it is not a licence to overstate the case: no oral vitamin is a sunscreen, and Gelagen does not claim to be one. Taking a supplement and skipping SPF is spending money to protect a house while leaving the door open.
One direction the caution runs the other way. Prescription retinoids and strong retinol products increase sun sensitivity, so people using them need sunscreen more than average, not less.
The Honest Trade-Offs
Sunscreen is not costless. Very high, very consistent use can lower vitamin D synthesis, which is worth discussing with a doctor if you have a reason to be concerned. Some formulas irritate some skins, and finding one you will actually wear every day matters far more than finding the one with the best laboratory numbers. A product used four days a week beats a better product used once a month.
None of this needs a purchase from this website. That is the point of putting it here.
Answers
Questions On This Article
Is sunscreen really more effective than skincare products?
For preventing visible ageing, yes, and by a wide margin. Most visible facial ageing is attributed to ultraviolet exposure rather than to time alone.
Do I need it indoors?
UVA passes through ordinary window glass, so a desk beside a window or a long drive counts. A room with no daylight does not.
Does Gelagen protect against sun damage?
No, and this page will not suggest otherwise. It is a vitamin supplement, not a sunscreen and not a substitute for one.
What SPF should I use?
SPF 30 or above, labelled broad spectrum, applied more generously than most people apply it.
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Your First Bottle Of Gelagen
Two gummies with breakfast, a page on this site for every vitamin in them, and two months to send the lot back if your skin disagrees.
- Two gummies daily, chewed before a meal
- Six vitamins, every one printed on the label
- Free US delivery plus six guides on the 3 and 6 bottle orders
- Sixty days to change your mind, opened bottles included